{
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  "coverImage": {
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  "description": "A layered body (10) includes: a substrate (11); and an oxide portion (13) positioned on the substrate (11). An oxide that constitutes the oxide portion (13) contains at least two or more rare-earth elements: silicon; and oxygen. The oxide that is conatined in the oxide portion (13) exhibits a…",
  "path": "/patents/1394239",
  "publishedAt": "2025-10-22T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "C01B33/20",
    "MITSUI MINING & SMELTING CO LTD [JP]"
  ],
  "textContent": "A layered body (10) includes: a substrate (11); and an oxide portion (13) positioned on the substrate (11). An oxide that constitutes the oxide portion (13) contains at least two or more rare-earth elements: silicon; and oxygen. The oxide that is conatined in the oxide portion (13) exhibits a diffraction peak derived from a (004) plane at a position of 2θ = 51.9° ± 0.9° in an X-ray diffraction pattern, and has an apatite crystal structure. The ratio of linear expansion coefficient of the oxide that constitutes the oxide portion (13) in an a-axis direction relative to linear expansion coefficient of the substrate (11) is 0.15 or more and 1.45 or less.",
  "title": "MULTILAYER BODY"
}